# Filter [Obj,Date]

### Description
Selects pairs by the value of the second column.

### Input
- `SOURCE [OBJ,DATE]`: the list of pairs to filter

### Output
- `TRUE [OBJ,DATE]`: the pairs for which the selection applies
- `FALSE [OBJ,DATE]`: the pairs for which the selection does not apply

### Parameters
- `Literal`: the value to compare each object's value against
- `Operation`: comparison function to use (`=`,`!=`,`<`,`>`,`<=`,`>=`)

Output scores can be [aggregated](docs://score_aggregation) and/or [normalised](docs://score_normalisation).